Rhianon
Rhianon was last recorded in 2008, when 7 babies were given it; 355 Americans have been recorded with it between 1976 and 2008 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Rhianon by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Rhianon?
Unranked in 2025
Its last girls’ rank on record is #15,055, in 2008; SSA lists a name only in years with 5 or more births.
25 babies in 1978, the peak
Rhianon peaked in 1978, when 25 girls were given it, #3,172 among girls’ names. It was not recorded in 2025.
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2008 | 7 | #15,055 | 3.7 |
| 2005 | 5 | #18,560 | 2.7 |
| 2004 | 12 | #9,146 | 6.5 |
| 2003 | 5 | #17,796 | 2.7 |
| 2002 | 6 | #14,986 | 3.3 |
| 2001 | 8 | #11,822 | 4.4 |
| 2000 | 13 | #7,934 | 7.2 |
| 1999 | 8 | #11,136 | 4.5 |
| 1998 | 14 | #7,006 | 7.9 |
| 1997 | 5 | #15,563 | 2.9 |
Every recorded year (31)
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 1996 | 7 | #11,506 | 4.0 |
| 1995 | 11 | #7,940 | 6.3 |
| 1994 | 12 | #7,484 | 6.7 |
| 1993 | 12 | #7,357 | 6.6 |
| 1992 | 12 | #7,402 | 6.5 |
| 1991 | 11 | #7,827 | 5.9 |
| 1990 | 11 | #7,732 | 5.8 |
| 1989 | 17 | #5,216 | 9.2 |
| 1988 | 12 | #6,574 | 6.7 |
| 1987 | 9 | #7,836 | 5.2 |
| 1986 | 13 | #5,680 | 7.6 |
| 1985 | 15 | #5,026 | 8.7 |
| 1984 | 16 | #4,673 | 9.5 |
| 1983 | 19 | #4,075 | 11.4 |
| 1982 | 15 | #4,886 | 8.9 |
| 1981 | 10 | #6,689 | 6.0 |
| 1980 | 16 | #4,686 | 9.6 |
| 1979 | 9 | #7,153 | 5.6 |
| 1978 | 25 | #3,172 | 16.3 |
| 1977 | 13 | #5,140 | 8.5 |
| 1976 | 7 | #7,907 | 4.8 |
Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.
Is Rhianon a boy’s or a girl’s name?
Rhianon has been recorded only for girls: SSA lists no boys with the name in 31 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Rhianon: the SSA national file counts each sex separately.
How many people are named Rhianon, and how old are they?
An estimated 345 Americans named Rhianon and born in the U.S. are alive in 2026 (97% of everyone recorded); the median is 37 years old and half are between 30 and 44. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 326 people named Rhianon (326 women and girls, 0 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 347 born in the U.S. The Census count is 6% below that prediction.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
How common is the spelling Rhianon?
Rhianon is a less common spelling of Rhiannon: SSA has recorded 355 Rhianon and 15,544 Rhiannon since 1880.
Of these 8 names spelled alike, given to 18,745 babies since 1880, Rhianon is the fifth most given (1.9% of them). In 2025 none of their 221 babies recorded by SSA was a Rhianon (SSA lists a name only with 5 or more babies of one sex).
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Rhianon
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Rhianon and names like it
- Compare Rhianon and RhiannonBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1970sRhianon peaked in 1978.
- California’s most given namesThe state where SSA recorded the most babies named Rhianon since 1910.
- The top names of 1978The year the most babies were named Rhianon.
- The names of the MillennialsMost people named Rhianon alive today were born 1981-1996.
- Names starting with RMost given first.